I'm glad American is increasing service to Chicago. They have more Europe flights from there than DFW and it's more convenient flying through there with 5 flights a day rather than 3. I wish a couple of them were mainline jets. 10 regional jets a day (between American and United) to O'Hare seems ridiculous. And the government wonders why airports are crowded? It's because they allow too many regional jets to the same city. RJs to LAX and EWR make sense; RJs to ATL, ORD, and IAH don't. Period.